Help with an MA in Economics.

I have a bit of an interesting problem.

I have a BM in Musical Theatre and a minor in Business Administration. I love performing, but in my undergrad I had to take some economics courses and I fell in love with it. I’ve devoted a fair amount of time independently studying it, and have thought that maybe credentials, such as an MA, might be the way to go. What are my options here? Will I need to get a second Bachelor’s before moving that on to a Master’s? Or can I just Elle Woods it and go straight for the MA?